Solve (3/5)^x (5/3)^2x = 125/27

Solve: \(\left(\frac{3}{5}\right)^x \left(\frac{5}{3}\right)^{2x} = \frac{125}{27}\)

Solution

\[ \left(\frac{3}{5}\right)^x \left(\frac{5}{3}\right)^{2x} = \frac{125}{27} \]

\[ \Rightarrow \frac{3^x}{5^x} \cdot \frac{5^{2x}}{3^{2x}} = \frac{125}{27} \]

\[ \Rightarrow \frac{3^x \cdot 5^{2x}}{5^x \cdot 3^{2x}} = \frac{125}{27} \]

\[ \Rightarrow \frac{5^x}{3^x} = \frac{125}{27} \]

\[ \Rightarrow \left(\frac{5}{3}\right)^x = \left(\frac{5}{3}\right)^3 \]

\[ \Rightarrow x = 3 \]

Final Answer:

\[ \boxed{x = 3} \]

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